Which of the following drugs is effective in the treatment of malaria?

Step-by-step solution

Quinine is an alkaloid obtained from the bark of the cinchona tree. It is a well-known antimalarial drug and is highly effective in the treatment of malaria. Analgin and Aspirin are primarily used as analgesics and antipyretics. Salol (phenyl salicylate) is used as an intestinal antiseptic. Answer: Quinine